Home / 3,929.41-5,416.28-2,982.11

Finding the Fourth Proportional to 3,929.41, 5,416.28 and 2,982.11

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Solution

The fourth proportional to 3,929.41, 5,416.28 and 2,982.11 is: 4,110.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.41 : 5,416.28 = 2,982.11 : x
  2. Step 2: Convert to fraction form
    3,929.41/5,416.28 = 2,982.11/x
  3. Step 3: Cross multiply
    3,929.41x = 5,416.28 × 2,982.11
  4. Step 4: Simplify right side
    3,929.41x = 16,151,942.75
  5. Step 5: Solve for x
    x = 16,151,942.75/3,929.41
  6. Step 6: Final answer
    x = 4,110.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.